1 /* 2 * Copyright (C) ST-Ericsson SA 2010 3 * 4 * License Terms: GNU General Public License, version 2 5 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson 6 */ 7 8 #ifndef __LINUX_MFD_STMPE_H 9 #define __LINUX_MFD_STMPE_H 10 11 #include <linux/mutex.h> 12 13 #define STMPE_SAMPLE_TIME(x) ((x & 0xf) << 4) 14 #define STMPE_MOD_12B(x) ((x & 0x1) << 3) 15 #define STMPE_REF_SEL(x) ((x & 0x1) << 1) 16 #define STMPE_ADC_FREQ(x) (x & 0x3) 17 #define STMPE_AVE_CTRL(x) ((x & 0x3) << 6) 18 #define STMPE_DET_DELAY(x) ((x & 0x7) << 3) 19 #define STMPE_SETTLING(x) (x & 0x7) 20 #define STMPE_FRACTION_Z(x) (x & 0x7) 21 #define STMPE_I_DRIVE(x) (x & 0x1) 22 #define STMPE_OP_MODE(x) ((x & 0x7) << 1) 23 24 #define STMPE811_REG_ADC_CTRL1 0x20 25 #define STMPE811_REG_ADC_CTRL2 0x21 26 27 struct device; 28 struct regulator; 29 30 enum stmpe_block { 31 STMPE_BLOCK_GPIO = 1 << 0, 32 STMPE_BLOCK_KEYPAD = 1 << 1, 33 STMPE_BLOCK_TOUCHSCREEN = 1 << 2, 34 STMPE_BLOCK_ADC = 1 << 3, 35 STMPE_BLOCK_PWM = 1 << 4, 36 STMPE_BLOCK_ROTATOR = 1 << 5, 37 }; 38 39 enum stmpe_partnum { 40 STMPE610, 41 STMPE801, 42 STMPE811, 43 STMPE1600, 44 STMPE1601, 45 STMPE1801, 46 STMPE2401, 47 STMPE2403, 48 STMPE_NBR_PARTS 49 }; 50 51 /* 52 * For registers whose locations differ on variants, the correct address is 53 * obtained by indexing stmpe->regs with one of the following. 54 */ 55 enum { 56 STMPE_IDX_CHIP_ID, 57 STMPE_IDX_SYS_CTRL, 58 STMPE_IDX_SYS_CTRL2, 59 STMPE_IDX_ICR_LSB, 60 STMPE_IDX_IER_LSB, 61 STMPE_IDX_IER_MSB, 62 STMPE_IDX_ISR_LSB, 63 STMPE_IDX_ISR_MSB, 64 STMPE_IDX_GPMR_LSB, 65 STMPE_IDX_GPMR_CSB, 66 STMPE_IDX_GPMR_MSB, 67 STMPE_IDX_GPSR_LSB, 68 STMPE_IDX_GPSR_CSB, 69 STMPE_IDX_GPSR_MSB, 70 STMPE_IDX_GPCR_LSB, 71 STMPE_IDX_GPCR_CSB, 72 STMPE_IDX_GPCR_MSB, 73 STMPE_IDX_GPDR_LSB, 74 STMPE_IDX_GPDR_CSB, 75 STMPE_IDX_GPDR_MSB, 76 STMPE_IDX_GPEDR_LSB, 77 STMPE_IDX_GPEDR_CSB, 78 STMPE_IDX_GPEDR_MSB, 79 STMPE_IDX_GPRER_LSB, 80 STMPE_IDX_GPRER_CSB, 81 STMPE_IDX_GPRER_MSB, 82 STMPE_IDX_GPFER_LSB, 83 STMPE_IDX_GPFER_CSB, 84 STMPE_IDX_GPFER_MSB, 85 STMPE_IDX_GPPUR_LSB, 86 STMPE_IDX_GPPDR_LSB, 87 STMPE_IDX_GPAFR_U_MSB, 88 STMPE_IDX_IEGPIOR_LSB, 89 STMPE_IDX_IEGPIOR_CSB, 90 STMPE_IDX_IEGPIOR_MSB, 91 STMPE_IDX_ISGPIOR_LSB, 92 STMPE_IDX_ISGPIOR_CSB, 93 STMPE_IDX_ISGPIOR_MSB, 94 STMPE_IDX_MAX, 95 }; 96 97 98 struct stmpe_variant_info; 99 struct stmpe_client_info; 100 struct stmpe_platform_data; 101 102 /** 103 * struct stmpe - STMPE MFD structure 104 * @vcc: optional VCC regulator 105 * @vio: optional VIO regulator 106 * @lock: lock protecting I/O operations 107 * @irq_lock: IRQ bus lock 108 * @dev: device, mostly for dev_dbg() 109 * @irq_domain: IRQ domain 110 * @client: client - i2c or spi 111 * @ci: client specific information 112 * @partnum: part number 113 * @variant: the detected STMPE model number 114 * @regs: list of addresses of registers which are at different addresses on 115 * different variants. Indexed by one of STMPE_IDX_*. 116 * @irq: irq number for stmpe 117 * @num_gpios: number of gpios, differs for variants 118 * @ier: cache of IER registers for bus_lock 119 * @oldier: cache of IER registers for bus_lock 120 * @pdata: platform data 121 */ 122 struct stmpe { 123 struct regulator *vcc; 124 struct regulator *vio; 125 struct mutex lock; 126 struct mutex irq_lock; 127 struct device *dev; 128 struct irq_domain *domain; 129 void *client; 130 struct stmpe_client_info *ci; 131 enum stmpe_partnum partnum; 132 struct stmpe_variant_info *variant; 133 const u8 *regs; 134 135 int irq; 136 int num_gpios; 137 u8 ier[2]; 138 u8 oldier[2]; 139 struct stmpe_platform_data *pdata; 140 141 /* For devices that use an ADC */ 142 u8 sample_time; 143 u8 mod_12b; 144 u8 ref_sel; 145 u8 adc_freq; 146 }; 147 148 extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data); 149 extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg); 150 extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length, 151 u8 *values); 152 extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length, 153 const u8 *values); 154 extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val); 155 extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins, 156 enum stmpe_block block); 157 extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks); 158 extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks); 159 extern int stmpe811_adc_common_init(struct stmpe *stmpe); 160 161 #define STMPE_GPIO_NOREQ_811_TOUCH (0xf0) 162 163 #endif 164